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<div id="dev-warning" class="admonition note">
  <p class="first admonition-title">Notice</p>
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  <section id="windows-cephfs">
<span id="ceph-dokan"></span><h1>在 Windows 上挂载 CephFS<a class="headerlink" href="#windows-cephfs" title="Permalink to this heading"></a></h1>
<p><code class="docutils literal notranslate"><span class="pre">ceph-dokan</span></code> 可用于在 Windows 上挂载 CephFS 文件系统。它利用了
Windows 驱动程序 Dokany ，该驱动程序允许在用户空间实现文件系统，很像 FUSE 。</p>
<p>请查看<a class="reference external" href="../../install/windows-install">安装指南</a>开始使用。</p>
<section id="id1">
<h2>用法<a class="headerlink" href="#id1" title="Permalink to this heading"></a></h2>
<section id="id2">
<h3>挂载文件系统<a class="headerlink" href="#id2" title="Permalink to this heading"></a></h3>
<p>要挂载 ceph 文件系统，可以用以下命令：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span><span class="o">.</span><span class="n">exe</span> <span class="o">-</span><span class="n">c</span> <span class="n">c</span><span class="p">:</span>\<span class="n">ceph</span><span class="o">.</span><span class="n">conf</span> <span class="o">-</span><span class="n">l</span> <span class="n">x</span>
</pre></div>
</div>
<p>此命令会把默认的 ceph 文件系统挂载到驱动盘符 <code class="docutils literal notranslate"><span class="pre">x</span></code> 下。如果 <code class="docutils literal notranslate"><span class="pre">ceph.conf</span></code>
放在默认位置（即 <code class="docutils literal notranslate"><span class="pre">%ProgramData%\ceph\ceph.conf</span></code> ），则此参数变为可选参数。</p>
<p><code class="docutils literal notranslate"><span class="pre">-l</span></code> 参数还允许用空文件夹作为挂载点，而不是驱动盘符。</p>
<p>用于挂载文件系统的 uid 和 gid 默认为 0 ，
可以用以下 <code class="docutils literal notranslate"><span class="pre">ceph.conf</span></code> 选项进行更改：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">client</span><span class="p">]</span>
<span class="c1"># client_permissions = true</span>
<span class="n">client_mount_uid</span> <span class="o">=</span> <span class="mi">1000</span>
<span class="n">client_mount_gid</span> <span class="o">=</span> <span class="mi">1000</span>
</pre></div>
</div>
<p>如果 Ceph 集群上有多个 FS ，
用选项 <code class="docutils literal notranslate"><span class="pre">--client_fs</span></code> 挂载非默认 FS ：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">mkdir</span> <span class="o">-</span><span class="n">Force</span> <span class="n">C</span><span class="p">:</span>\<span class="n">mnt</span>\<span class="n">mycephfs2</span>
<span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span><span class="o">.</span><span class="n">exe</span> <span class="o">--</span><span class="n">mountpoint</span> <span class="n">C</span><span class="p">:</span>\<span class="n">mnt</span>\<span class="n">mycephfs2</span> <span class="o">--</span><span class="n">client_fs</span> <span class="n">mycephfs2</span>
</pre></div>
</div>
<p>CephFS 子目录可以用 <code class="docutils literal notranslate"><span class="pre">--root-path</span></code> 参数指定挂载：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span> <span class="o">-</span><span class="n">l</span> <span class="n">y</span> <span class="o">--</span><span class="n">root</span><span class="o">-</span><span class="n">path</span> <span class="o">/</span><span class="n">a</span>
</pre></div>
</div>
<p>如果加了 <code class="docutils literal notranslate"><span class="pre">-o</span> <span class="pre">--removable</span></code> 选项，
挂载后可以显示在 <code class="docutils literal notranslate"><span class="pre">Get-Volume</span></code> 的结果中：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>PS C:\&gt; Get-Volume -FriendlyName &quot;Ceph*&quot; | `
        Select-Object -Property @(&quot;DriveLetter&quot;, &quot;Filesystem&quot;, &quot;FilesystemLabel&quot;)

DriveLetter Filesystem FilesystemLabel
----------- ---------- ---------------
          Z Ceph       Ceph
          W Ceph       Ceph - new_fs
</pre></div>
</div>
<p>用 <code class="docutils literal notranslate"><span class="pre">ceph-dokan</span> <span class="pre">--help</span></code> 查看所有的参数。</p>
</section>
<section id="id3">
<h3>凭证<a class="headerlink" href="#id3" title="Permalink to this heading"></a></h3>
<p><code class="docutils literal notranslate"><span class="pre">--id</span></code> 选项传入 CephX 用户名，我们要用该用户的密钥环挂载 CephFS 。
下列命令是等效的：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span> <span class="o">--</span><span class="nb">id</span> <span class="n">foo</span> <span class="o">-</span><span class="n">l</span> <span class="n">x</span>
<span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span> <span class="o">--</span><span class="n">name</span> <span class="n">client</span><span class="o">.</span><span class="n">foo</span> <span class="o">-</span><span class="n">l</span> <span class="n">x</span>
</pre></div>
</div>
</section>
<section id="id4">
<h3>卸载文件系统<a class="headerlink" href="#id4" title="Permalink to this heading"></a></h3>
<p>发出 ctrl-c 或者用 unmap 命令，就可以卸载：</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ceph</span><span class="o">-</span><span class="n">dokan</span><span class="o">.</span><span class="n">exe</span> <span class="n">unmap</span> <span class="o">-</span><span class="n">l</span> <span class="n">x</span>
</pre></div>
</div>
<p>注意，在取消 Ceph 文件系统映射时，必须用与创建映射时完全相同的挂载点参数。</p>
</section>
<section id="id5">
<h3>局限性<a class="headerlink" href="#id5" title="Permalink to this heading"></a></h3>
<p>注意， Windows ACL 会被忽略。支持 Posix ACL ，但是不能用当前的 CLI 修改。
将来，我们可能会添加一些命令操作来更改文件所有权或权限。</p>
<p>还有一点需要注意， cephfs 不支持强制文件锁，
而 Windows 则非常依赖。目前，我们让 Dokan 来处理文件锁，
它只能在本地执行。</p>
<p>与 <code class="docutils literal notranslate"><span class="pre">rbd-wnbd</span></code> 不同， <code class="docutils literal notranslate"><span class="pre">ceph-dokan</span></code> 目前没有 <code class="docutils literal notranslate"><span class="pre">service</span></code> 命令。
为了让 cephfs 挂载在主机重启后继续运行，考虑用 <code class="docutils literal notranslate"><span class="pre">NSSM</span></code> 。</p>
</section>
</section>
<section id="id6">
<h2>故障排除<a class="headerlink" href="#id6" title="Permalink to this heading"></a></h2>
<p>请参考 <a class="reference external" href="../../install/windows-troubleshooting">Windows 故障排除</a>。</p>
</section>
</section>



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